['www1', 'www2', 'www3'], 'dns': ['ns1', 'ns2'] } Role definitions are not necessary configuration of hosts only, but could hold other role specific settings of your choice. This is achieved by defining are run instead of at module load time. (For example, you could connect to remote servers to obtain role definitions, and not worry about causing delays at fabfile load time when calling e.g. fab --list hosts is env.roles (not to be confused with env.roledefs!) which, if given, will be taken as a list of role names to look up in env.roledefs. Globally, via the command line In addition to modifying env.hosts

['www1', 'www2', 'www3'], 'dns': ['ns1', 'ns2'] } Role definitions are not necessary configuration of hosts only, but could hold other role specific settings of your choice. This is achieved by defining are run instead of at module load time. (For example, you could connect to remote servers to obtain role definitions, and not worry about causing delays at fabfile load time when calling e.g. fab --list hosts is env.roles (not to be confused with env.roledefs!) which, if given, will be taken as a list of role names to look up in env.roledefs. Globally, via the command line In addition to modifying env.hosts

general • Describe the C++ abstract machine specifically • Language goals that drive its design • Role in program development and execution • Important definitions and characteristics • Important components • The input and output dynamics of interactive devices shall take place in such a fashion that prompting output is actually delivered before a program waits for input. What constitutes an interactive

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same on Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment this message and exit. 12 Chapter 1. Documentation Click Documentation, Release 1.2.dev0 1.4.8 Prompting Sometimes you want parameters that can either be provided from the command line or if not, you

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment Usage: digest [OPTIONS] Options: --hash-type [md5|sha1] --help Show this message and exit. 1.5.9 Prompting In some cases, you want parameters that can be provided from the command line, but if not provided

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment Usage: digest [OPTIONS] Options: --hash-type [md5|sha1] --help Show this message and exit. 1.5.9 Prompting In some cases, you want parameters that can be provided from the command line, but if not provided

all unsaved editor files are saved without prompting. $SAVE_CUR Before executing the command the contents of the active editor window are saved without prompting if they are modified. $SAVE_PROMPT Before Pascal allows you to create procedure and variable names using words that are not permitted in that role in Free Pascal. This is because there are certain words that are reserved in Free Pascal (and Delphi)

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment Usage: digest [OPTIONS] Options: --hash-type [md5|sha1] --help Show this message and exit. 1.4.8 Prompting In some cases, you want parameters that can be provided from the command line, but if not provided

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment Usage: digest [OPTIONS] Options: --hash-type [md5|sha1] --help Show this message and exit. 1.5.8 Prompting In some cases, you want parameters that can be provided from the command line, but if not provided

conventions • supports loading values from environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports Arguments can do less than options. The following features are only available for options: • automatic prompting for missing input • act as flags (boolean or otherwise) • option values can be pulled from environment Usage: digest [OPTIONS] Options: --hash-type [md5|sha1] --help Show this message and exit. 1.5.9 Prompting In some cases, you want parameters that can be provided from the command line, but if not provided